Our firm

Marriott Harrison is an independent, partner-led City law firm advising ambitious companies and the investors and lenders behind them – from entrepreneurs and scaleups to private equity and venture capital firms, growth funds, banks, and private investors.  

Many of our clients operate in markets being reshaped by technology and AI, where growth brings greater complexity. We help them move through key moments with confidence, whether raising capital, completing an acquisition, managing a dispute, or preparing for an exit.  

A Chambers ranked London firm, recognised as one of the top ten in venture capital and M&A, we trust our trainees with real responsibility and give them space to grow, find their footing, and shape a career on their own terms.  

Who we are 

Our work spans the legal issues that come with building, funding, and protecting businesses, particularly in markets being reshaped by technology and AI. Chambers UK ranks us among the top ten firms for venture capital and M&A. 

We believe the development of our people is our most important investment in the future strength of the firm. That’s what makes us who we are. 

What we do  

Our clients include entrepreneurs, scaleups, and established businesses, as well as private equity and venture capital firms, growth funds, banks, management teams, and private investors. 

We help them move through key moments with confidence, whether raising capital, completing an acquisition, managing a dispute, or preparing for an exit. 

Our clients 

Some key investor and acquirer clients include Accel, Atomico, Balderton, Bridgepoint, Beringea, Redalpine, Singular, DCVC, Lagercrantz, Dacke Industri, Pembroke VCT, Creandum, Bethnal Green Ventures. 

We work with many entrepreneurs and frontier technology businesses, including Ankar AI, Space Forge, Learn Amp, Antares Defence Systems, Biographica, Soldo, Reform RX and Ravio. 

We work with many entrepreneurs and frontier technology businesses, including Ankar AI, Space Forge, Learn Amp, Antares Defence Systems, Biographica, Soldo, Reform RX and Ravio.  

The deals    

• Acted for Swiss venture capital firm Redalpine on its investment in AI giant Nscale through its multi-stage Summit Fund.
• Advised the management team of AI platform Helio Intelligence on its sale to ECI Partners.  
• Advised private equity firm Rcapital on its acquisition of IOM Consulting Limited, an occupational hygiene, laboratory, and professional services consultancy.  
• Advised venture capital firm Giant Ventures on its participation in materials AI startup CuspAI’s $450m Series B, valuing the Cambridge-based company at $2.6bn.  
• Advised French and Swiss venture capital firms Singular and Redalpine in the Series A round for AI deep tech startup Apoha.
• Acted for university spinout fund Oxford Science Enterprises on its investment in precision diagnostics healthtech Vivid Dx's $15m seed funding round, co-led with Cedars-Sinai Intellectual Property Co.  
• Advised lender and investor Zugzwang Capital on two debt and equity investments in Talea Care Homes, its first two investments from its newly established social care fund.  
• Advised US deeptech investor DCVC on co-leading Quantum Motion’s $160m Series C fundraise.
• Advised UK and German venture capital firms Kindred Capital and World Fund on their investment in critical minerals startup Lithosquare’s recent $25m seed fundraising.  
• Acted for Sweden-listed tech group Lagercrantz on its acquisition of industrial business Michael Smith Switchgear Limited.
• Acted for defence manufacturer Antares Defence Systems on the sale of minority stakes acquired by Spanish and Czech private equity funds, Hyperion Fund and Operating Partners Group.  
• Supported Swedish industrial group Dacke Industri in its European expansion through the acquisition of UK-based Midland Flow Ltd and Italy-based M&M Instruments S.r.l.  
• Represented venture capital firms Balderton and Accel in energy provider Fuse Energy’s $70 million Series B round.    

Managing partner 

Daniel Jacob leads a multidisciplinary team advising ambitious businesses as they build, grow, and scale. Together, they have fostered a first-class reputation for personal service and strategic advice grounded in deep understanding of the dynamic markets our clients are operating in. 

Training principal 

Graham Halliday oversees our summer vacation scheme and trainee programme, helping future trainees develop into confident, well-rounded lawyers. Drawing on his experience in venture capital and M&A, he gives trainees valuable insight into the commercial thinking, judgement and client relationships that shape modern legal practice.  

Perks 

Those attending the vacation scheme will be paid £450 (subject to tax and NI) to cover expenses.  

Those successful in securing a Marriott Harrison training contract will receive a comprehensive package of benefits* which includes: 

• Fully funded SQE costs  

• £8000 maintenance grant  

• 25 days’ annual holiday entitlement plus bank/public holidays  

• Pension contributions (up to 5% matched)   

• Private medical insurance  

• Life assurance  

• Permanent health insurance  

• Cycle to work scheme  

• Season ticket loan  

• Access to 24/7 online GP service  

• Employee Assistance Programme (EAP)   

*Benefits are subject to eligibility and scheme criteria and may be amended, withdrawn, or replaced by the firm at its discretion.

Vacation scheme  

At Marriot Harrison, we recruit our trainee solicitors exclusively from our summer vacation scheme.  

To be considered for a trainee position, you must first secure a place on its summer vacation scheme in June.   

We welcome up to 18 students each year, and all training contract offers are made from this group. 

Candidates who wish to secure a training contract for 2028, must apply by 1 February 2027.

APPLY HERE   

Successful participants work at our office for one week in June with up to five other students on the scheme.

Our week-long summer vacation scheme offers an immersive introduction to life at Marriott Harrison. As part of the scheme, you'll have the opportunity to explore practice areas that interest you, work on real client matters, and gain hands-on experience across our core areas of expertise. 

You'll be fully immersed in the firm's culture through a range of structured activities, interactive workshops, and meaningful conversations with colleagues at all levels of the business. The programme also provides unique opportunities to connect with our people outside of day-to-day work, including events such as an 'Ask Me Anything' session with our managing partner, Daniel Jacob. 

Designed to provide a genuine insight into life at Marriott Harrison, the scheme combines practical experience, training, and networking opportunities, giving you a real flavour of the work, culture, and career opportunities available as a trainee. 

Your training contract will begin in the year following your summer vacation scheme. The scheme serves as a valuable introduction to life at Marriott Harrison and provides the foundation for your future career with us. 

Before joining as a trainee, you'll be invited to a range of firm social events, giving you the opportunity to build relationships with colleagues, develop your understanding of the business, and gain a feel for the firm's culture. By the time you start your first seat, you'll already know many of the people you'll be working with and feel confident transitioning into the role. 

During your training contract, you'll follow a structured 24-month programme combining technical training, practical experience, and ongoing professional development.  

You'll rotate through four six-month seats across our core practice areas which include: corporate (including venture capital and M&A), growth debt and private credit, commercial and IP, employment, disputes, real estate, restructuring and insolvency with most trainees completing at least one or two seats within the corporate team.  

Working within small teams means you'll enjoy early exposure to clients, meaningful responsibility, and involvement in live matters from the outset. As you progress, you'll gain hands-on experience across a variety of transactions and matters, often working on projects that span multiple practice areas and industries. All trainees are supervised by a partner or senior associate throughout their training contract. 

From day one, you'll be trusted with real responsibility. While your early work may involve supporting transactions and drafting ancillary documents, you'll quickly develop the skills and confidence to take on increasingly complex work, including drafting key documentation and liaising directly with senior lawyers and other advisors. 

Throughout your training contract, you'll be supported by experienced partners and senior associates who are committed to your development. Each trainee is supervised by a partner or senior associate and receives regular feedback and guidance. 

Your development continues beyond qualification. Through MH360 Academy, our dedicated learning and development programme, we provide the technical, commercial, and leadership training needed to help you become a well-rounded lawyer and play a key role in Marriott Harrison's continued success. 

We are dedicated to fostering a diverse and inclusive workplace, where everyone feels they belong and can bring their full selves to work. We believe in equal opportunities for growth and development for all employees.   

Our initiative “MH Discover” is something we are incredibly proud of and celebrates diversity by showcasing individuals who have overcome challenges and adversity in society. Quarterly, we find and ask inspiring individuals to come and speak to our team and to share their perspective with us.   

Beyond work, the Marriott Harrison team are also actively involved in sports and social activities as a firm and within the industries we serve. 

We currently pay SQE fees for successful applicants who are due to commence their studies. We do not reimburse SQE or LPC fees incurred retrospectively. In addition, successful applicants will also receive an £8,000 maintenance grant.

• Corporate (including venture capital
• M&A)
• Restructuring & insolvency
• Growth debt & private credit
• Commercial & IP
• Employment
• Disputes
• Real estate

• Corporate & Commercial
• General Practice

• London

• London

• RCJ Advice

• LMP Education